Case Studies in Cybersecurity Response Planningintermediate
Describe the vulnerability management cycle from asset discovery through verification, and explain why verification matters.
Answer
The cycle is discover assets and ownership, identify weaknesses, assess likelihood and impact, prioritize risks, remediate through patching or other controls, verify that the fix worked, and monitor for recurrence or new exposure. Verification matters because a patch or configuration change may fail, leave a weakness unresolved, or create an operational problem.
Explanation
### The concept
Vulnerability management is continuous rather than a one-time scan. Discovery identifies systems, software, owners, data, and business importance. Identification uses scanning, advisories, configuration reviews, testing, audits, and reports. Assessment estimates likelihood and impact; prioritization directs effort. Remediation may involve patching, reconfiguration, upgrading, isolating, restricting, replacing, or redesigning. Verification checks that the weakness is actually resolved and that the change did not break an important service. Monitoring tracks exceptions, new advisories, and recurrence.
### What a good answer covers
- The sequence from asset discovery to monitoring.
- Risk assessment and prioritization before action.
- Multiple remediation options, not patching alone.
- Verification that the fix worked and caused no unacceptable operational effect.
### Terms
- **Remediation**: Action taken to reduce or remove a vulnerability's risk.
- **Asset inventory**: A record of systems, software, owners, and importance.
### Remember
A fix is not complete until its effectiveness has been checked.
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